StacksVerified U.S. regulatory reference

1 CFR §601.26

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)The NCPC shall prepare a supplemental EIS if five or more years has elapsed since adoption of the EIS and:
    1. (1)There are substantial changes to the proposed action that are relevant to environmental concerns; or
    2. (2)There are significant new circumstances or information that are relevant to environmental concerns and have a bearing on the proposed action or its impacts.
  2. (b)The NCPC may supplement a Draft or Final EIS at any time, to further the purposes of NEPA.
  3. (c)The NCPC shall prepare, circulate, and file a supplement to a Draft or Final EIS in in accordance with the requirements of §§ 601.22 through 601.24 except that Public Scoping is optional for a supplemental EIS.
  4. (d)The NCPC shall prepare a ROD for a Supplemental EIS. The ROD's contents, the procedure for public review, and the manner in which it shall be adopted shall be as set forth in § 601.25.